Abbreviations and blocks:
$~abbr abbreviation.
$[] set caret to this position. Can be multiple (hot spots).
$[text] select text. Can be multiple (hot spots).
$$ symbol $.
$\] escape symbol ]. Can be used in $[text] block: $[One [1$\].
${VAR} variable name that has been set in "Variables:" section.
$; comment line.
$# comment line.